# Three Todo vs OneTask

The clearest difference is price: OneTask at Free against Three Todo's $0.99. OneTask also leads on update cadence (fortnightly vs every 12 months). Three Todo's advantage is in-app purchases (none vs 2). On ads, device support and iOS requirement there is nothing between them.

OneTask is free to download; Three Todo costs $0.99 up front. OneTask sells 2 in-app purchases, starting at $0.99 per month. Three Todo asks for nothing beyond the download.

Three Todo ships an update every 12 months, OneTask fortnightly. The most recent releases landed on November 6, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Three Todo | OneTask |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.9 (16 ratings)](https://appshunter.io/ios/app/three-todo/id882164264/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Fortnightly** |
| Monetization | Paid | — |
| Size | 9 MB | 39 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Jeffrey Lai](https://appshunter.io/developer/1630879658) | [ARZU ARSLAN](https://appshunter.io/developer/1895192852) |

## What reviewers say

### Three Todo

[App page](https://appshunter.io/ios/app/three-todo/id882164264)

This task management app focuses on simplicity by presenting only three tasks at a time. It offers three actions: Done, Defer, or Drop, to help users manage their to-do list without added stress or complexity.

**Highlights:** Focus on 3 tasks at a time, Stress-free task management, Action tasks: Done, Defer, or Drop, Minimalist and non-intrusive design, Prioritizes tasks based on user actions

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


### OneTask

[App page](https://appshunter.io/ios/app/onetask-adhd-daily-planner/id6765960771)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Task Pro - Monthly | $0.99 | per month |
| One Task Pro - Yearly | $2.99 | per year |


## Frequently asked questions

### Is Three Todo free?

Three Todo costs $0.99, with no in-app purchases.

### Is OneTask free?

OneTask is free to download, with in-app purchases available.

### Do Three Todo or OneTask have ads?

Neither Three Todo nor OneTask shows ads.

### Which is updated more often, Three Todo or OneTask?

Three Todo ships an update every 12 months, and OneTask fortnightly. Most recently, Three Todo was updated on November 6, 2026 and OneTask on October 28, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*